CN1387464A - Method and apparatus for spreading treating agent on moving web - Google Patents
Method and apparatus for spreading treating agent on moving web Download PDFInfo
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- CN1387464A CN1387464A CN00812254A CN00812254A CN1387464A CN 1387464 A CN1387464 A CN 1387464A CN 00812254 A CN00812254 A CN 00812254A CN 00812254 A CN00812254 A CN 00812254A CN 1387464 A CN1387464 A CN 1387464A
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- Prior art keywords
- finishing agent
- nozzle plate
- plate
- perforate
- paper web
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
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- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paper (AREA)
- Spray Control Apparatus (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Treatment Of Fiber Materials (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Nozzles (AREA)
Abstract
A method and an arrangement for spreading a treating agent, for example, size or a coating onto a moving surface in the manufacture of the web-shaped folios or paper and paperboard and various sheet products in particular. In the method, the treating agent is fed into at least one feeding chamber (3) and the agent is directed from the feeding chamber (3) onto the moving surface (1). Jets are formed from the treating agent by directing the agent through at least one nozzle plate (6) comprising openings (10) that are defined by the nozzle plate (6) around the entire periphery, and the formed jets are applied directly onto the moving surface (1).
Description
The present invention relates to be used for the method for spreading treating agent according to claim 1 as described in the preamble, this finishing agent is such as being surperficial paste, water or coating compound, as a kind of not jet of supporting, spread on the surface of processed paper web, perhaps spread on the surface, this surface is transferred to finishing agent on the surface of paper web again, in order that change the performance of paper web.The present invention also can for example be applied to handle flat product, rather than handles roller apparatus for coating or curtain formula apparatus for coating.
The present invention also relates to be used for realizing the device of this method.
Current, adopt several different methods coating and treatment paper and cardboard.Usually be coated with, at first, coating spread on the paper web with two kinds of phases, and by using a painting cloth-knife, a bar or an air brush to produce last coating individually.Also there are some operational processing methods can provide quantity correct and enough uniform finishing agent, and need not carry out scraping.These methods for example comprise spray paint, in some cases jetting stream or curtain formula coating.In the coating of short dead time, make coating or paste layer even immediately by using the painting cloth-knife that forms the coating chamber or bar and coating process with interrelating.Spreading treating agent also makes the uniform mode of finishing agent influential to the performance of product, therefore, selects processing method can make the quality of final products be applicable to multiple purpose.
The most of dissemination apparatus that are used for the current finishing agent that is using are large-scale and complicated apparatus.All these devices be in operation quality, throughput rate and other factors relative restrictions with product, Here it is, and why they only are applicable to the product that production range is limited.When new engine more, it is difficult in the position of old equipment heavy equipment being installed, and has limited and use replacement device in course of modernization.Use a problem of the most frequently used applying device to be: this device adopts a large amount of overflows and coating repeatedly, the part of coating is returned as backflow, perhaps turn back to a storage tank, by this storage tank paint pump is delivered to applying device again by applying device or by scraper.In this case, finishing agent contacts with air, and forms air bubble, before can sending finishing agent to applying device once more, must remove these bubbles in the process of finishing agent circulation.It is difficult removing air, and degasser is very expensive.In the circulation of returning, finishing agent may be dirty at an easy rate, and is perhaps additionally contaminated, and we must guarantee that finishing agent keeps cleaning.Usually, also must add pesticide in the finishing agent to, so that prevent the growth of bacterium, bacterium can cause various problems.As a result, a kind of new method that needs treatment paper and board web lining.Particularly in cardboard is made, a kind of like this method and apparatus preferably is provided, dissemination surface paste on the surface of paper web, this will make can with than in the past obviously high speed on the surface of paper web, be coated with the paste of sufficient amount, and when using in the little board machine of production volume, this method and apparatus also is that enough costs are effective.Quantity and the configuration of adjusting paste aborning also are king-sized problems.
The purpose of this invention is to provide a kind of new method and apparatus, they can solve the problem of above-mentioned known prior art.
Basis of the present invention is: finishing agent is spread on the transitional surface of paper web or motion by the several parallel perforate that forms in flat, make this flat board center on the whole neighboring of perforate around these perforates, so the perforate in flat forms jet.
In this article, flat also refers to nonplanar, and such as the wall of pipe, this tube wall has according to perforate of the present invention.
More precisely, according to the feature that in the characteristic of claim 1, provides that is characterized as of the method for spreading treating agent of the present invention.
The feature that in the characteristic of claim 20, provides that is characterized as according to device of the present invention.
The present invention has tangible advantage.
By help of the present invention, a kind of very better way device is provided, be used for finishing agent directly or indirectly is dispersed on the surface of the board web lining of motion or paper web lining.This device also can be used to handle other material, for example, be used to have paste plasticity from bonding material or handle the fortifying fibre knitting.In principle, this device includes only a simple nozzle bearing and it is bearing near the paper web part.This device can be very narrow, make it in addition can match with the gap between the paper web of roller and motion.Therefore, can use this device at many positions, that be coated with cloth treating agent at these positions and once be difficulty or impossible, even can be placed on this device in the production line, never did processing before in those production lines with the finishing agent of fluid.In this case, unless there are enough drying capacities available, we mainly talk about is that water is got wet or is coated with a spot of surperficial paste.One embodiment of the present of invention comprise when the roller, belt or the analog that clean the paper machine device and when needing the water of form of film of exact magnitude, give and send uniform moisture film.
The present invention also can for example use in the further processing in paper web in the gluing of surfaces of bonding material in making.The present invention can work in very big velocity interval well, thereby it can be in the middle use of updating the equipment when throughput rate is low, and uses in new engine, so throughput rate may be quite high.The adjustable range of the rate of feed of the finishing agent of device is very big, and this makes even can be coated with high coating weight in coating for the first time.Yet this device can be used to handle two-phase or multiphase coat substrates, as so-called in wet lip-deep wet process, in this case, layer in front drying or be dried before, scatter second layer finishing agent in front on the end face of one deck.Certainly, can be dry these layers bone dry or part, as traditional drying realizes.Same device can be used for scattering multiple finishing agent.This device is applicable to the water of handling usefulness, the bonding agent of mixing, and the agent of coating profit, has only very little structural change.When by on thin nozzle plate, make and when sending finishing agent by the perforate that flat board forms, the jet of finishing agent becomes uniformly, thereby there are not many air to mix with finishing agent, and, the quality of jet and pulse strength height, even make and pass the entrained air layer in surface, finishing agent still can be transferred to well and be attached on the surface of motion.Yet, particularly under processed substrate is at a high speed situation, is preferably in the apparatus for coating front and uses a part, eliminate the air that moves together along with substrate to finishing agent being transferred to the lip-deep influence of motion.This part can for example be flat of close surface of moving, perhaps is flat or the suction pieces that contacts with it.If it is a part that contacts with the surface of motion, the most handy steam, the injection of steam and air or water jet is lubricated or cleans.
This device does not need many equipment; In other words, do not need to move storage tank, edge scraper, in some cases, even can save degasser.For example in the process of coating surface paste, preferably surperficial paste directly is transferred to this device by the jet boiler that is used for making solution.Can use this device under without the condition of scraping, therefore, contact with air without any the steam of finishing agent, air can not mix with finishing agent.Also can under the condition of not returning circulation fully, use this device, thereby all materials that are full of chamber of sending applying device to are spread on the paper web, perhaps, be provided with one in the chamber and flow through passage this chamber is cleaned if be full of at this, it is air impervious, and does not have oxygen.In this case, also prevented growth, and do not needed pesticide is mixed with finishing agent for the debatable especially bacterium of paste.Now, the waste water that is for example produced by cleaning and flusher no longer hinders the operation of the pure system of water of factory.Because do not need to move storage tank, so change and to realize soon for the mode of different finishing agent mixtures.Than being easier to the low finishing agent of viscosity is spread on the processed surface.Under the situation of other high viscosity substance, if desired, can use coating rod or painting cloth-knife, any cut is flattened, and, in this case, preferably dosage is remained near the last quantity that requires of finishing agent.
This device also can be worked under the finishing agent condition of high temperature well, makes that people can be by its viscosity of temperature effect and other character of regulating finishing agent.As top illustrated, can be used for multiple material to the present invention, in other words, the present invention goes for mobile by different way material, use according to method of the present invention even can handle the high viscosity substance that comprises a large amount of solids, that part of flow path that diameter is little is very short, so can not hinder flowing of high-viscosity mixture.Here it is, and why this device is not easy to stop up, and, be easy to clear up it with hand or with multiple automatic cleaning apparatus.In principle, the wearing part of this device just comprises the flat board of the perforate of the jet that forms finishing agent, still, because the quantity of applied material also depends on the feeding pressure of this material, so, can be at an easy rate by changing the possible wearing and tearing of feeding pressure compensation perforate.In fact, the coating compound that only comprises solids just can cause wearing and tearing, when sending into paste or water, does not in fact have wearing and tearing under the low pressure that is adopted, and also very little with the coating compound wearing and tearing that comprise solids.
The present invention is applicable to the manufacturing of couch board well, and it makes the paste of sending into bonding these layers between each layer become easy.The present invention also can be used for being under the semi-humid state coating composition or paste on paper web when paper web, in other words, is coated with before in the end dry.In this case, can partly carry out feeding, for example directly deliver on roll gap, belt or the roller, perhaps directly deliver on the surface of paper web by drying nest, pressures partially or the paper web of machine.
Below, will at length investigate the present invention by means of the exemplary reference accompanying drawing, wherein:
Fig. 1 is according to the side view of a kind of device of the present invention as a section;
Fig. 2 is the top view according to a kind of device of the present invention; And
Fig. 3 is according to the side view of a kind of device of the present invention as a section.
In Fig. 1, applying device be fitted in a film transfer roller 1 near, preferably this device is installed on the side or end face of paper web of a motion, perhaps as the applying device of a film transfer apparatus for coating 1, as situation in this example.If use this applying device that finishing agent directly is dispersed on the paper web, can support this paper web in opposite sides with a roller, belt, a rhizoid or other supporting member with respect to the coating side.Under the simultaneously treated situation in both sides, the jet that impacts on opposite side on paper web is in fact also supporting this paper web.This device comprises a bulk container 2, forms a feeding chamber 3 in this container.A sieve plate 4 is closed this feeding chamber 3, and a spacer assembly 7 is clamped to this sieve plate on the bulk container 2.These spacer assembly 7 next-door neighbour's feeding chambers 3 have a perforate, and a nozzle plate 6 is closed this perforate, by using installed part 8 nozzle plate is installed on the end face of spacer assembly 7.Like this, between nozzle plate 6 and sieve plate, form an intermediate cavity 5.Can for example combine by working pressure flexible pipe and spring handle bulk container 2, spacer assembly 7 and installed part 8, make when from the pressure release of pressure hose, these parts of spring handle separate with sieve plate and change nozzle plate.
The operation of this device is delivered to feeding chamber 3 to finishing agent, and according to the application, these finishing agents comprise water, paste, coating compound, perhaps are used for handling other fluid of manufactured paper web.Sieve plate 4 has perforate 9, and the diameter of these perforates cans be compared to most nozzle perforate 10 little of nozzle plate.Pass sieve plate 4 for the finishing agent of delivering in the feeding chamber 3, and any solid impurity in finishing agent is left in the feeding chamber, can be these solid impurities by removing in the chamber by making finishing agent recirculation excessive in the feeding chamber or interrelating with the cleaning of this device.At a kind of optimal way of cleaning sieve plate in service once is this plate of reeling back and forth in wash chamber in the end of this device, and the finishing agent that for example is used in recirculation in this wash chamber cleans this sieve plate, in this clean cycle finishing agent is filtered.Employed all materials needn't so need sieve plate 4.If using this device gets paper web wet, when sending into water or steam, can save this sieve plate, but, when scattering coating compound, solution, emulsion or comprising the analog of solid matter, this sieve plate usually is necessary, even this is because of the inevitable stopped nozzles plate of the agglomerate that forms in coating, but they may cause the defective in the coating.
Finishing agent passes nozzle perforate 10 by intermediate cavity 5.Finishing agent forms jet in this perforate 10, the directive facing surfaces, in this case, directive film transfer roller 1.The diameter of this jet is very little, and still, these jets are not scattered into spraying, therefore, compare with spraying, their quality and pulse strength are higher, and finishing agent can be attached on the surface that it impacts well, and jet even can penetrate the air layer that carries by the paper web of motion.The thickness of the nozzle plate 6 that is formed from steel can be about 0.1-0.5 millimeter, and the width in the zone that is not supported between installed part 8 can be approximately the 0.5-2 millimeter.If intermediate cavity is 0.1 crust to the pressure of nozzle plate, the slit that is applied to active force on the nozzle plate and device is very little, and therefore, nozzle plate can be very thin, and sealing easily.If the diameter of nozzle perforate is the 0.1-0.7 millimeter, the ratio of the diameter of formed perforate 10 and the thickness of plate, promptly with the large percentage of the length of perforate, but usually less than 1.Because this perforate is very short, the material that adheres to gradually in this perforate can not form any obstruction, and the particle littler than perforate be easy to by.Therefore, the material of obstruction is not easy to rest on perforate.This device can be worked under the high feeding pressure of processed material, and still, in this case, no matter when pressure improves, and must reduce the size of perforate, the situation of very small size perforate and the perforate of non-actual size may occur using.Correspondingly, the speed of distribution will improve, and when making high if desired impact velocity, can improve pressure.The surface of nozzle plate is easy to fluid stream or by the scraping cleaning, makes that the material in the accumulation of the top of perforate can not block perforate on nozzle plate.Yet, main principle be compare with the size of the perforate of nozzle plate in the sieve plate of nozzle plate front very little, so can reach on the nozzle plate without any the material that blocks.Also can be designed to cross cross-directional to nozzle plate, make and to clean it continuously or clean it by stages.In this case, the both sides that are preferably in nozzle plate are provided with a low-pressure chamber, like this, can may be taken away from this device by the coating material of slot leakage any.Also can make the suction channel of liquid, to eliminate the potentially dangerous that causes obstruction by for example deposit towards cleaning device.
If finishing agent has high surface energy, and each jet inwardly contracts each other, preferably uses single nozzle plate, and in this case, the distance between the perforate is as much as possible little, makes the coating that can obtain whole heavy curtain shape scatter.In this application, may be preferred by a kind of proper additive being added in the finishing agent mixture that the film that improves surface energy or increase finishing agent forms.Yet it is better to keep each jet usually to be separated from each other, and makes that they can not form the coating of whole film shape before they run into coated substrate.In this case, preferably use many rows' nozzle plates, make perforate to open away from each other, and, on the direction of configuration, still obtain good covering, make perforate on the configuration direction distance as desired.Have two rows, three row or more rows of openings.Can handle the outer surface of nozzle plate with a kind of smears, this smears repels finishing agent, prevents contraction.Can use this smears to prevent that each jet from shrinking bunchy, and on the surface of nozzle plate, contact with each other, perhaps reduce this effect.In most of the cases, finishing agent may be a polytetrafluoroethylene (PTFE) (teflon
).Can prevent also that with the smears processing finishing agent from adhering on the outer surface of nozzle plate, and prevent to make finishing agent to flow, prevent that simultaneously finishing agent from guaranteeing to be dropped on the processed surface in uncontrollable mode along nozzle surface.Also can be designed so that it is outwardly-bent to nozzle plate, perhaps perforate row is formed by the projection of sharp-pointed lath-shaped.In this embodiment, can reduce the surface energy of each jet with chemicals.On above-mentioned basis, can for example change the type of jet according to the requirement of using by the distance that changes the hole.
Preferably the adjusting device of the angle and distance of regulating jet is connected on this device.In this case, best distribution method is to scatter in downstream slightly with respect to the direction of motion on processed surface, and to scatter distance be several millimeters or tens millimeters.Preferably paste is spread on the surface of paper web to leave adjustable distance of roll gap, therefore, can regulate paste and penetrate the degree of paper web, perhaps, particularly in carrying out the coating of film transfer paste, can the paste on the side of paper web be coated directly onto on the surface of paper web in the roll gap front, and can be on the surface of second roller that is applied to the paste pressue device at the paste on the opposite side.
In order to obtain maximum additional strength, when handling cardboard, importantly the receptible paste as much as possible of paper web is applied on the paper web with paste.In this case, when dosage is increased to when too high, paste has the danger that forms a memory block in the roll gap of paper web and film transfer roller, so paste is splashed in the environment by this memory block.Continue to form the memory block owing to form so-called small memory block; Therefore, roll gap is taken pictures, and image is handled, can make the mode automation of operation with the image procedure with video camera.In this case, video camera is followed the tracks of the formation of memory block, and is increased to when too big when the memory block, reduces dosage by the flow at the basic adjusted paste of graphical analysis.If the memory block becomes too big, paste is sputtered by the memory block, and machine is polluted.A small amount of formation of small memory block can not cause disadvantageous splashing, and can think that its formation is the sign of maximum possible dosage.
When machine being stopped and rerunning equipment, preferably water begins to start, and begins to send into actual finishing agent then.In start-up course, can send into water or finishing agent in the groove, this groove is located at the front of dissemination apparatus, and when reaching the treatment conditions that are applicable to production, this groove is removed.
In some cases, must washer jet plate 6 or sieve plate 4 in running.Fig. 1 shows three kinds of possible cleaning methods.In order to clean sieve plate 4, in feeding chamber 4, on the direction of chamber, be provided with a block plate 12, an edge of this plate is leaning against on the surface of sieve plate 14 on the side of feeding chamber 3.Can be on the direction of chamber moving steel plate 12, make it to wipe lip-deep any impurity off in that side of chamber 3 attached to sieve plate 4.Processed material possibility drying is on the surface of processed that side of surface of nozzle plate 4.Can prevent this from occurring by the steam jet steam that steam blowing scattered on nozzle plate 6 by position next-door neighbour's nozzle plate.Can directly in steam pipe 13, make the suitable hole of size simply or adopt one or more horizontal nozzles to form steam jet.Round steam pipe 13 equipped feeders 14, collect steam that condenses and the material that is diluted by steam.If adopt such steam purification, should be arranged so that feeder 13 is positioned at the lower limb of device to this device.It usually is acceptable that finishing agent directly leaks on the handled surface slightly, therefore, without any need for feeder.When needs, the perforates 10 that can clean in nozzle plate with the water jet 15 of needle-like, this water jet moves on perforate row's direction, and alternately sprays opening and clean.Because perforate is not easy to stop up, seldom need such cleaning.When disconnected aborning, can clean this device with water under high pressure.
Fig. 2 is the top view of device, and wherein, nozzle plate 6 can be arranged on that side that is used to clean of applying device in addition.In this device, nozzle plate 6 is longer than the width of paper web to be processed, and for example the guide rod by sealing is installed in this plate between the installed part 8 movably.The length of nozzle plate 6 is at least than the big twice of width of paper web to be processed.Actuator 11 is arranged on the both sides of the machine that is used for handling or make paper web, and these actuators are used for making nozzle plate 6 to move in the vertical.Because the active force that the pressure in the intermediate cavity applies on nozzle plate is very little, so the frictional force in slit is little, the power of actuator also can be very low, and therefore, this device size can be very little, and its manufacturing cost is very effective.A kind of simple structure that is used for sealing sieve plate is to form groove on the wall of pressure chamber, and sieve plate moves in the horizontal along these grooves.Because the franchise with respect to the gap of sieve plate is very little, impurity can not reach actual nozzle plate by this gap.When wanting the washer jet plate, it is driven on any one side in the actuator 11 with respect to production line, perhaps automatically clean with above-described device, perhaps clean with hand.In addition, nozzle plate can be a continuous ring, and therefore, in this applying device running, it can rotate continuously or by stages.
Fig. 3 shows an embodiment, in this embodiment, delivers to nozzle plate by using two stage obstruction that finishing agent is given.The bulk container 2 of this device comprises a feeding channel 17, and hole 18 is stretched over feeding chamber 3 by this passage, and sieve plate 3 is closed this chamber.And then intermediate cavity 5 is linked by sieve plate 3 in second hole 20, and this intermediate cavity is in the back of nozzle plate 6.In this scheme, the installed part 16 of an integral body is closed bulk container 2, by using bolt and force pipe 21 this installed part is connected on the bulk container 2.Because must keep the desired pressure differential height of feeding pressure ratio nozzle perforate of finishing agent, to guarantee good cross-sectional configuration, so such block system usually is necessary.In the device of Fig. 3, stop up and divide three phases, that is, first pressure falls and occurs in first hole, and second pressure falls and crosses sieve plate, and the 3rd pressure falls in second hole.Measure to arrive the volume flow of device simply or measure incoming flow and go to flow between difference in flow can realize control to coating weight, therefore, the quantity of the coating of arrival paper web can directly be measured by these.Consider the speed of machine, use traffic control can automatically be adjusted to desired numerical value to the quantity of finishing agent.
Nozzle plate can be made of a variety of materials, and still, the spring narrow stainless steel is very superior, and this is because its cost is effective, and processes easily and make.Can coat the coating of in instrument is made, using usually to fillet.Other manufactured materials comprises pottery, other metal and metal alloy, and coating is arranged or do not have the synthetic material of coating.These materials of the most handy laser, plasma spray coating, electron beam or water jet machining are produced perforate, and this is not have burr because these methods can advantageously provide little perforate.If the size of desired perforate is enough big, the manufacture method that also can adopt other is such as boring.
Adjustable range according to the coated finishing agent quantity of device of the present invention is very big.Result of the test below a device has provided on surperficial paste mixture is attached to nozzle plate on this device, is contained in the back of the nozzle strainer of spray application device.
| 12% paste | Pressure (crust) | Perforate/distance (millimeter) | Wet film (gram/square metre) |
| Speed: 1000 meters/minute | |||
| ?1,2 | ?0.5/0.5 | ?13 | |
| ?1.2 | ?0.4/0.4 | ?10 | |
| ?1.5 | ?0.5/0.5 | ?36 | |
| ?1.5 | ?0.4/0.4 | ?30 | |
| ?1.5 | ?0.3/0.3 | ?20 | |
| ?2.0 | ?0.5/0.5 | ?110 | |
| ?2.0 | ?0.5/0.4 | ?85 | |
| ?2.0 | ?0.3/0.3 | ?54 |
On these results' basis, adopt according to method of the present invention be easy to produce the quantity 10-40 gram of the desired wet film of multiple application/square metre.
Because in nozzle strainer, produce pressure differential maximum in the experimental rig, and cross nozzle plate and only act on low-down pressure, so, not corresponding at the feeding pressure shown in the table with the pressure of perforate effect in crossing nozzle plate.Although pressure differential is very little, the covering that jet can provide.
When doing experiment, can on the spring steel blank, produce perforate well on 0.3 and 0.5 millimeter the sheet steel with laser.
The scheme that departs from above-described embodiment is also thought and is included in the scope of the present invention.
Can be by means of ultrasonic continuous ground or clean fixing by stages or nozzle plate movably.Several nozzle plates can sequentially be set, and in same block of plate, perforate a few alignment prefaces or overlapping can be set.It is the easiest making round hole, still, adopts above-described manufacture method also to be easy to change the shape of perforate.Can use the present invention directly a kind of finishing agent, such as paste, coating, water or steam, delivered on the paper web, give between the layer of delivering to paper web, delivered on film transfer roller or the belt, perhaps delivered to, perhaps delivered on another continuous thin slice, be used for carrying out the further processing of product by on the machine-made paper web lining or board web lining that separates.Except flat board, can in pipe or the plate or other the change in the plate of bending of bending, make perforate, these perforates can be parallel with the vertical line on the surface of sieve plate, and perhaps their direction can assemble jet in desired mode for tilting with respect to this surperficial vertical line.
If use an air barrier plate or use a scraper in the front of jet, as sieve plate and nozzle plate, can therefore, can clean it with automatic flushing device or with hand when needed moving this air barrier plate or scraper on the end of roller or on the width in paper web.In this case, barrier plate is deformable plate or fillet preferably, thereby can roll it or crooked.Otherwise, must on the side of machine, have living space, its size is at least half of width of paper web, makes the scraping part can reach this side far enough.In this case, can alternately clean in both sides.If only clean in a side, certainly, needed space must be stretched over the whole width of paper web.
In according to the solution of the present invention, can be by changing the size and/or the pore size distribution of nozzle plate perforate, by changing the size and/or the pore size distribution of sieve plate perforate, perhaps in some cases, by changing the size and/or the pore size distribution of the perforate of blocking, control arrives the quantity of the finishing agent on the paper web.Because these parts are easy to change and very fast change, and their price is very favourable, be easy to so change the bore size of sieve plate or nozzle plate.For example can change the size of nozzle plate perforate at an easy rate, with the configuration of correcting measuring.Like this, can proofread and correct systematic error in the paper web of bottom or irregular.These comprise the roll gap and the porosity change in the horizontal of the bottom paper web of the absorption that for example can influence finishing agent, and other factors, and these factors are influential to the manufacturing and the final performance of product.
In according to the solution of the present invention, be easy to regulate the side limit and application width; Make this limit become very accurate, and any side leakage can not take place.Can send the adjusting side limit and application width here by giving of the nozzle perforate on that side that is blocked in finishing agent simply by seal or a similar part of adopting a kind of motion.In this case, because can be arranged on the regulating part that blocks perforate in the sealed cavity space, so the problem of any leakage can not occur.Width that also can be by measuring paper web or processed plate and make seal leave the edge desired distance to be arranged or be close to this edge exactly, automatically regulate and handle width.If send finishing agent, preferably or on the basis of flow velocity or at the feeding speed of the outmost at least pipe of based measurement adjusted of the configuration of paper web by in the equipped several feed pipes of machine length in the horizontal, giving to the feeding chamber.When needing, can be used for this control method the scope of entire process width, by with dividing plate feeding chamber transversely being divided into sub-chamber and can improving its efficient in paper web.On the other hand, when changing the processing width, preferably also change the feeding speed of outmost feed pipe.
Except that above-mentioned purpose, also can get in touch the present invention who in Finnish patent application 990557 and 990008, describes and advantageously use the present invention, those Finnish patent are used for applying coatings and other finishing agent, therefore, in fact regulate coating weight with a scraper that separates.
Claims (19)
1. one kind is used for finishing agent is coated to the lip-deep method of a motion, wherein:
Finishing agent is delivered at least one feeding chamber (3), and,
Finishing agent is directed into the surface (1) of a motion by feeding chamber (3),
It is characterized in that,
Comprise that by finishing agent is passed at least one nozzle plate (6) of perforate (10) forms jet by finishing agent, those perforates are formed round whole periphery by nozzle plate (6), and
Formed jet is applied directly on the surface (1) of motion.
2. in accordance with the method for claim 1, it is characterized in that, formed jet is applied directly on the surface of paper web to be processed.
3. in accordance with the method for claim 1, it is characterized in that jet is guided on the surface, and this surface is transferred to finishing agent on the surface of paper web, such as transferring to the film transfer roller or being with.
4. in accordance with the method for claim 1, it is characterized in that, jet is guided into paper web to be processed and the surface of shifting between the roll gap place, therefore, the part of finishing agent is coated directly onto on the paper web, and on the surface that a part is applied to paper web contacts.
5. in accordance with the method for claim 1, it is characterized in that a sieve plate (4) of passing in the feeding chamber (3) is sent finishing agent.
6. any one described method in requiring according to aforesaid right, it is characterized in that, for example in order to clean, nozzle plate (6) is moved on on the direction of motion of moving surface in the horizontal, make and to move to the part of the length of nozzle plate (6) beyond the width of area to be processed of moving surface.
7. any one described method in requiring according to aforesaid right is characterized in that, steam is blown at least on the nozzle plate (6), to keep this plate (6) cleaning.
8. according to any one described method in the claim 1 to 6, it is characterized in that the perforate (10) that the water jet of needle-like (15) is guided into nozzle plate (6) is to clean perforate (10).
9. according to any one described method in the claim 1 to 6, it is characterized in that, ultrasonic wave is guided into nozzle plate (6), to clean this plate.
10. any one described method in requiring according to aforesaid right is characterized in that, measures the quantity of delivering to the finishing agent on the paper web on the basis of the volume flow measurement of finishing agent.
11. a lip-deep device that is used for finishing agent is spread to a motion, it comprises:
At least one feeding chamber (3) can be sent finishing agent in this chamber to, and
Being used for a finishing agent guides to the lip-deep device (6,10) of motion by feeding chamber (6),
It is characterized in that,
At least one nozzle plate (6) that at least one feeding chamber (3) is closed at least in part, this plate comprises perforate (10), nozzle plate (6) forms these perforates round whole periphery, is used for forming the jet of finishing agent, and they are guided on the surface of motion.
12., it is characterized in that a sieve plate (4) is fitted in the feeding chamber (3) according to the described device of claim 11, finishing agent guided to upward filtration treatment agent before of nozzle plate (6).
13. according to claim 11 or 12 described devices, it is characterized in that, the length of sieve plate (6) is bigger than the width of the area of moving surface to be processed, and for example in order to clean, part (11) moves to beyond the width of area to be processed sieve plate (6) at least in part.
14. according to claim 11,12 or 13 described devices, it is characterized in that, at least one steam jet (13), being used for a steam blows towards nozzle plate (6) at least.
15. according to claim 11,12 or 13 described devices, it is characterized in that, water jet that can at least one needle-like, it can be introduced in the perforate (10) of nozzle plate (6).
16. according to the described device of claim 12, it is characterized in that, a vane plate (12), it is fitted in feeding chamber (3) and moves, and makes at least one edge scraping sieve plate (4) or nozzle plate (6) in its edge.
17. the sieve plate in being used for finishing agent is spread to the lip-deep device of motion, it comprises:
At least one feeding chamber (3) can be sent finishing agent in this chamber to, and
Be used for lip-deep (6,10) guiding to motion from the finishing agent of feeding chamber (6),
It is characterized in that sieve plate (6) has perforate (10), nozzle plate (6) forms these perforates round whole periphery.
18., it is characterized in that sieve plate (6) comprises a rows of openings according to the described sieve plate of claim 17.
19., it is characterized in that sieve plate (6) comprises several rows of openings according to the described sieve plate of claim 17.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI991498A FI108993B (en) | 1999-06-30 | 1999-06-30 | Method and arrangement for applying a treating agent to a moving surface |
| FI991498 | 1999-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1387464A true CN1387464A (en) | 2002-12-25 |
| CN1196532C CN1196532C (en) | 2005-04-13 |
Family
ID=8555000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB008122547A Expired - Fee Related CN1196532C (en) | 1999-06-30 | 2000-06-29 | Method and apparatus for spreading treating agent on moving web |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US7879408B1 (en) |
| EP (1) | EP1196249B1 (en) |
| JP (1) | JP4810035B2 (en) |
| KR (1) | KR100701732B1 (en) |
| CN (1) | CN1196532C (en) |
| AT (1) | ATE451971T1 (en) |
| AU (1) | AU5831200A (en) |
| BR (1) | BR0012634A (en) |
| CA (1) | CA2376255A1 (en) |
| DE (1) | DE60043542D1 (en) |
| FI (1) | FI108993B (en) |
| WO (1) | WO2001002098A1 (en) |
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| FI20010985A0 (en) * | 2001-05-10 | 2001-05-10 | Metso Paper Inc | Method and arrangement for handling paper or cardboard |
| FI110443B (en) * | 2001-07-03 | 2003-01-31 | Metso Paper Inc | Method and apparatus for making adhesive-coated paper or cardboard |
| FI20011953A0 (en) | 2001-10-08 | 2001-10-08 | Metso Paper Inc | Method and apparatus for coating a moving web |
| FI111870B (en) * | 2002-01-15 | 2003-09-30 | Metso Paper Inc | Munstycksserie |
| FI111562B (en) | 2002-01-16 | 2003-08-15 | Metso Paper Inc | A method and apparatus for applying a treating agent to a moving surface |
| FI115732B (en) | 2003-06-05 | 2005-06-30 | Metso Paper Inc | Method and apparatus for surface sizing of paper or board |
| FI123582B (en) * | 2010-04-29 | 2013-07-31 | Metso Paper Inc | METHOD AND EQUIPMENT FOR HANDLING THE FIBER |
| DE102010029815A1 (en) | 2010-06-08 | 2011-12-08 | Voith Patent Gmbh | Method for one- or two-sides application of a liquid or pasty coating medium in form of a spray jet on a running surface, which is a paper-, cardboard- or other fibrous material web |
| US10676219B2 (en) * | 2016-10-01 | 2020-06-09 | Shay C. Colson | Printing packaging in expanded material |
| EP2876206B2 (en) | 2013-11-21 | 2023-03-01 | Valmet Technologies, Inc. | Method for producing fiber webs and production line for producing fiber webs |
| US20160228911A1 (en) * | 2015-02-09 | 2016-08-11 | BMGI Corporation | Spray coating system for fiber web |
| WO2017095219A1 (en) | 2015-12-04 | 2017-06-08 | Medspray Bv | Spray device and spray nozzle body |
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- 1999-06-30 FI FI991498A patent/FI108993B/en not_active IP Right Cessation
-
2000
- 2000-06-29 KR KR1020017016920A patent/KR100701732B1/en not_active IP Right Cessation
- 2000-06-29 JP JP2001507581A patent/JP4810035B2/en not_active Expired - Fee Related
- 2000-06-29 CA CA002376255A patent/CA2376255A1/en not_active Abandoned
- 2000-06-29 AU AU58312/00A patent/AU5831200A/en not_active Abandoned
- 2000-06-29 EP EP00944076A patent/EP1196249B1/en not_active Expired - Lifetime
- 2000-06-29 WO PCT/FI2000/000599 patent/WO2001002098A1/en active Search and Examination
- 2000-06-29 AT AT00944076T patent/ATE451971T1/en active
- 2000-06-29 BR BR0012634-9A patent/BR0012634A/en not_active IP Right Cessation
- 2000-06-29 CN CNB008122547A patent/CN1196532C/en not_active Expired - Fee Related
- 2000-06-29 US US10/019,120 patent/US7879408B1/en not_active Expired - Fee Related
- 2000-06-29 DE DE60043542T patent/DE60043542D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP4810035B2 (en) | 2011-11-09 |
| FI991498A (en) | 2000-12-31 |
| CN1196532C (en) | 2005-04-13 |
| AU5831200A (en) | 2001-01-22 |
| CA2376255A1 (en) | 2001-01-11 |
| FI108993B (en) | 2002-05-15 |
| DE60043542D1 (en) | 2010-01-28 |
| KR20020033113A (en) | 2002-05-04 |
| WO2001002098A1 (en) | 2001-01-11 |
| EP1196249A1 (en) | 2002-04-17 |
| KR100701732B1 (en) | 2007-04-02 |
| EP1196249B1 (en) | 2009-12-16 |
| JP2003503195A (en) | 2003-01-28 |
| ATE451971T1 (en) | 2010-01-15 |
| BR0012634A (en) | 2002-05-28 |
| US7879408B1 (en) | 2011-02-01 |
| FI991498A0 (en) | 1999-06-30 |
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